Abstract
In vitro proliferation and cytokine production were investigated in BALB/c mice splenic cell cultures that were stimulated with concanavalin A (ConA) and lipopolysaccharide (LPS) and simultaneously exposed to salivary gland extracts (SGE) of unfed and partially fed adult ixodid ticks (Ixodes ricinus, Rhipicephalus appendiculatus, Amblyomma variegatum). Generally, tick SGE enhanced proliferation of unstimulated splenocytes and SGE of unfed ticks suppressed mitogen induced proliferation. Partially fed R. appendiculatus and A. variegatum suppressed ConA responses, while partially fed I. ricinus stimulated both ConA and LPS induced proliferation. A. variegatum and R. appendiculatus females slightly enhanced LPS responses 2 days after attachment but suppressed them at the end of the slow feeding phase. In 72 h ConA induced cell cultures, interferon gamma (IFN-γ) production was suppressed by SGE of all ticks, interleukin (IL)-10 production was enhanced by unfed I. ricinus and partially fed A. variegatum males and IL-5 production was enhanced by feeding R. appendiculatus females and A. variegatum males. The study revealed variability in the responsiveness of murine splenocytes to SGE of different ixodid tick species, whereby patterns of host immunomodulation within one tick species differed between sexes and changed during feeding.
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Kazimírová, M., Rolníková, T., Dvorožňáková, E. et al. In vitro splenocyte proliferation responses of BALB/c mice to salivary gland extracts of three ixodid tick species (Acari: Ixodidae). Biologia 62, 786–792 (2007). https://doi.org/10.2478/s11756-007-0141-1
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DOI: https://doi.org/10.2478/s11756-007-0141-1